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/*
* KAsteroids - Copyright (c) Martin R. Jones 1997
*
* Part of the KDE project
*/
#include <qpainter.h>
#include "ledmeter.h"
#include "ledmeter.moc"
KALedMeter::KALedMeter( QWidget *parent ) : QFrame( parent )
{
mCRanges.setAutoDelete( true );
mRange = 100;
mCount = 20;
mCurrentCount = 0;
mValue = 0;
setMinimumWidth( mCount * 2 + frameWidth() );
}
void KALedMeter::setRange( int r )
{
mRange = r;
if ( mRange < 1 )
mRange = 1;
setValue( mValue );
update();
}
void KALedMeter::setCount( int c )
{
mCount = c;
if ( mCount < 1 )
mCount = 1;
setMinimumWidth( mCount * 2 + frameWidth() );
calcColorRanges();
setValue( mValue );
update();
}
void KALedMeter::setValue( int v )
{
mValue = v;
if ( mValue > mRange )
mValue = mRange;
else if ( mValue < 0 )
mValue = 0;
int c = ( mValue + mRange / mCount - 1 ) * mCount / mRange;
if ( c != mCurrentCount )
{
mCurrentCount = c;
update();
}
}
void KALedMeter::addColorRange( int pc, const QColor &c )
{
ColorRange *cr = new ColorRange;
cr->mPc = pc;
cr->mColor = c;
mCRanges.append( cr );
calcColorRanges();
}
void KALedMeter::resizeEvent( QResizeEvent *e )
{
QFrame::resizeEvent( e );
int w = ( width() - frameWidth() - 2 ) / mCount * mCount;
w += frameWidth() + 2;
setFrameRect( QRect( 0, 0, w, height() ) );
}
void KALedMeter::drawContents( QPainter *p )
{
QRect b = contentsRect();
unsigned cidx = 0;
int ncol = mCount;
QColor col = colorGroup().foreground();
if ( !mCRanges.isEmpty() )
{
col = mCRanges.at( cidx )->mColor;
ncol = mCRanges.at( cidx )->mValue;
}
p->setBrush( col );
p->setPen( col );
int lw = b.width() / mCount;
int lx = b.left() + 1;
for ( int i = 0; i < mCurrentCount; i++, lx += lw )
{
if ( i > ncol )
{
if ( ++cidx < mCRanges.count() )
{
col = mCRanges.at( cidx )->mColor;
ncol = mCRanges.at( cidx )->mValue;
p->setBrush( col );
p->setPen( col );
}
}
p->drawRect( lx, b.top() + 1, lw - 1, b.height() - 2 );
}
}
void KALedMeter::calcColorRanges()
{
int prev = 0;
ColorRange *cr;
for ( cr = mCRanges.first(); cr; cr = mCRanges.next() )
{
cr->mValue = prev + cr->mPc * mCount / 100;
prev = cr->mValue;
}
}
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